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42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
commit 26db277f8e028be83d9ab16ef8e4077e9f745c17
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Author: Gwenole Beauchesne <gbeauchesne@splitted-desktop.com>
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Date: Thu Sep 3 15:46:37 2009 +0000
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Check for __attribute__((visibility("hidden"))).
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diff --git a/configure.ac b/configure.ac
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index eedfe4c..f2d0ea4 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -100,6 +100,30 @@ if test x$enable_i965_driver = xyes && ! $PKG_CONFIG --atleast-version=2.4 libdr
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fi
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AM_CONDITIONAL(BUILD_I965_DRIVER, test x$enable_i965_driver = xyes)
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+dnl Check for __attribute__((visibility()))
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+AC_CACHE_CHECK([whether __attribute__((visibility())) is supported],
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+ libva_cv_visibility_attribute,
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+ [cat > conftest.c <<EOF
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+int foo __attribute__ ((visibility ("hidden"))) = 1;
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+int bar __attribute__ ((visibility ("protected"))) = 1;
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+EOF
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+ libva_cv_visibility_attribute=no
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+ if ${CC-cc} -Werror -S conftest.c -o conftest.s >/dev/null 2>&1; then
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+ if grep '\.hidden.*foo' conftest.s >/dev/null; then
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+ if grep '\.protected.*bar' conftest.s >/dev/null; then
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+ libva_cv_visibility_attribute=yes
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+ fi
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+ fi
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+ fi
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+ rm -f conftest.[cs]
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+])
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+ATTRIBUTE_HIDDEN=""
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+if test $libva_cv_visibility_attribute = yes; then
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+ ATTRIBUTE_HIDDEN="__attribute__((visibility(\"hidden\")))"
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+fi
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+AC_DEFINE_UNQUOTED([ATTRIBUTE_HIDDEN], [$ATTRIBUTE_HIDDEN],
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+ [Defined to __attribute__((visibility("hidden"))) when available])
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+
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# We only need the headers, we don't link against the DRM libraries
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LIBVA_CFLAGS="$DRM_CFLAGS"
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AC_SUBST(LIBVA_CFLAGS)
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